Instant Pot Chicken Burrito Bowl

Name: Instant Pot Chicken Burrito Bowl
Ingredients: 2 lbs boneless, skinless chicken breasts; 1 small onion, diced; 2 Tbsp olive oil; 2 tsps adobo; 3 tsps onion powder; 3 tsps chili powder; 2 tsp garlic powder; 3 tsps ground cumin; ground black pepper, to taste; 4 cups chicken broth; 2 cups diced tomatoes, canned drained; 1 15 oz can black beans rinsed; 1 15.5 oz can corn; 2 cups white rice; shredded Mexican blend cheese, for serving; fresh pico de gallo, for serving; sour cream, for serving; fresh guacamole, for serving